Update acceptable options for energy_grid
Update acceptable options for energy_grid

lilulu/openmc,smharper/openmc,walshjon/openmc,johnnyliu27/openmc,smharper/openmc,samuelshaner/openmc,bhermanmit/openmc,walshjon/openmc,shikhar413/openmc,wbinventor/openmc,liangjg/openmc,smharper/openmc,mit-crpg/openmc,mjlong/openmc,walshjon/openmc,wbinventor/openmc,amandalund/openmc,wbinventor/openmc,johnnyliu27/openmc,shikhar413/openmc,mit-crpg/openmc,amandalund/openmc,johnnyliu27/openmc,liangjg/openmc,samuelshaner/openmc,liangjg/openmc,liangjg/openmc,mit-crpg/openmc,paulromano/openmc,amandalund/openmc,walshjon/openmc,kellyrowland/openmc,shikhar413/openmc,paulromano/openmc,wbinventor/openmc,johnnyliu27/openmc,mjlong/openmc,mit-crpg/openmc,paulromano/openmc,lilulu/openmc,kellyrowland/openmc,shikhar413/openmc,samuelshaner/openmc,samuelshaner/openmc,smharper/openmc,amandalund/openmc,bhermanmit/openmc,paulromano/openmc,lilulu/openmc